Consider the following statements regarding criticisms of the Directive Principles:

1. Their non-justiciable character has led to criticism that they lack legal force.
2. Their mixture of different philosophies and unequal treatment of major and minor issues has been criticised as illogical arrangement.
3. They have been criticised as reflecting political ideas associated with nineteenth-century England.
4. The criticism of constitutional conflict concerns only disputes between the Union and the States.

Which of the statements given above are correct?